Tyler Haws finished with 22 points for the second-seeded Cougars (22-10), who extended their winning streak to five games. BYU will face off against third- seed San Francisco on Monday in the semifinals. Anson Winder tallied 16 points and six steals and Matt Carlino chipped in 11 points

Anthony Ireland had 19 points while Gabe Levin logged a double-double with 18 and 10 rebounds for the 10th-seeded Lions (13-19), who have lost two of their last three. Evan Payne scored 15 points and Nick Stover had 12.

BYU made 51.5 percent of its field goal attempts in the first half as it led 43-36 at the break. LMU shot 35.5 percent from the field but went 13-of-15 from the free-throw line to remain within striking distance.

The Cougars connected on 40.6 percent of their shots from the floor in the second frame. The Lions converted on 38.7 percent of their field goal tries and put no pressure on BYU as it cruised to victory.